DPs are DPs, they are outside the team structure as they have unlimited salaries. So doesn't take a brilliant mind to slot a great player in these 3 spots, more like it takes deep pockets.
but the rest of the team could be filled by great players who get paid like mata, ~150k. I was just daydreaming that there is a brilliant manager out there that could fill each one of those roles with a Mata type player. But in reality its like you said its a system that identifies talent. No one person could personally scout every player in the world. But these players are out there!
I gotta imagine the ability to create that team is out there too, but the minute a manager shows those talents in the MLS they get poached to another club in europe. Then that guy loses his job becuase he's good at identifying 150-200k talent but can't survive in the million dollar player pool. A la the "
peter principle".